Side-emission type light-emitting diode and a backlight unit using the light-emitting diode
AssigneeCitizen Electronics Co., Ltd.
InventorsMitsunori Ishizaka, Teppei Takano, Junji Miyashita
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Abstract
A side-emission type light-emitting diode including: a first substrate having a concavity formed in one of side surfaces of the first substrate, the concavity including an inner surface which is configured to be a first reflecting surface; an LED-element-mounting board of thin plate shape, arranged on the lower surface of the first substrate, the board configured to close the concavity at the lower surface of the first substrate; an LED element mounted on the board and arranged in the concavity; and a light-transmitting resin filled in the concavity and configured to seal the LED element.
Claims12
A side-emission type light-emitting diode comprising:
- a first substrate having an upper surface, a lower surface, and a peripheral edge surface between the upper and the lower surfaces, a concavity disposed in one of the peripheral edge surface, the concavity passing through the upper surface and the lower surface of the first substrate in top plan view, the concavity including an inner surface configured to be a first reflecting surface;
- a light-emitting-diode-element-mounting board of thin plate shape, arranged on the lower surface of the first substrate, the board configured to close the concavity at the lower surface of the substrate;
- a light-emitting diode element mounted on an upper surface of the light-emitting-diode-element-mounting board, disposed in the concavity, and electrically connected to the first substrate;
- and a light-transmitting resin sealing the light-emitting diode element and having an upper surface, a lower surface and a peripheral edge surface between the upper and the lower surfaces;
- further comprising a second substrate arranged on the upper surface of the first substrate, the second substrate having an upper surface, a lower surface, and a peripheral edge surface between the upper and the lower surfaces, a concavity disposed in the peripheral edge surface, the concavity passing through the upper surface and the lower surface of the second substrate in top plan view, the concavity including an inner surface configured to be a second reflecting surface, and wherein the concavities of the first substrate and the second substrate overlap with each other at least in part in top plan view.
A side-emission type light-emitting diode comprising:
- a first substrate having an upper surface, a lower surface, and a peripheral edge surface between the upper surface and the lower surface, a concavity disposed in the peripheral edge surface, the concavity passing through the upper surface and the lower surface of the first substrate in top plan view, the concavity including an inner surface configured to be a first reflecting surface;
- a second substrate arranged on an upper surface of the first substrate, the second substrate having an upper surface, a lower surface, and a peripheral edge surface between the upper surface and the lower surface, a concavity disposed in the peripheral edge surface, the concavity passing through the upper and lower surfaces of the second substrate and including an inner surface configured to be a second reflecting surface;
- a light-emitting-diode-element-mounting board of thin plate shape, arranged on the lower surface of the first substrate, the board configured to close the concavity at the lower surface of the first substrate;
- a light-emitting diode element mounted on an upper surface of the board and disposed in the concavity of the first substrate;
- and a light-transmitting resin sealing the light-emitting diode element and filled in the concavities of the respective first and second substrates;
- the concavities of the first substrate and the second substrate overlapping with each other at least in part in top plan view.
Dependencies are inferred from the claim text.